Hi everyone, I've had my Dwarf Gourami for a year and a half now and recently he has lost some coloration, white stringy poop, a bulge on his side and seems to have pine-coned scales. He still eats like normal and behaves normally from what I can tell. These are my Water Parameters: 0 ppm Ammonia 0 ppm Nitrites 15 ppm Nitrates Tested with API's Freshwater Drop test kit. and I do a 25% water change weekly, remember to condition with Seachem Prime. I attached some pictures to help with the identification of what is causing these symptoms. Any help would be greatly appreciated!